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Painting Problem and Solution

Get expert opinion on common painting problems and solutions and how to avoid them.

Uneven / Patchy Appearance

Causes:

Uneven Putty Thickness Underneath
Patchwork (application of additional paint to ‘touch up’ partially dried painted areas)

Solution:

Avoid patchwork, preferably coat the whole wall. Patch when painted surface is dried.
Brushing in one direction.

Shade Difference

Causes:

Batch to batch variation
Old and expired shade cards

Solution:

If different batches of same color are available, mix before application
After patchwork, apply one coat on whole wall

Roller Marks

Causes:

Application of second coat over semi-dry first coat.

Solution:

When painting, paint evenly and lightly in the same direction, wait until the first coat has thoroughly dried before applying the second coat.

Peeling

Causes:

Paint applied over dirt, oil, grease or previously painted glossy surface.
Seepage or moisture beneath the paint film is a frequent cause of Flaking and Peeling (alkaline bricks, seepage from ground).

Solution:

Apply a coat of Wall Sealer on porous surfaces prior to topcoat.
Identify and eliminate the cause of moisture.

Mottling

Causes:

Appear on new brick, plaster or cement as they dry.
Failure to adequately prepare surface by removing all previous efflorescence.

Solution:

The source of moisture must be repaired before any paint preparation. If excess moisture is the cause, eliminate the source, sealing any cracks in the masonry with sand and cement.

Low Opacity

Causes:

Too thin application of paint
Color of the newly applied paint is much lighter than the original finish

Solution:

Before painting, check the back panels of cans for proper thinning ratio and thin the paint according to instructions. Make sure to stir paint well before application.

Cracking

Causes:

Use of a low quality paint that has inadequate adhesion and flexibility.
The applied paint is very thick.

Solution:

It is possible to correct cracking that does not go down to the substrate by removing the loose or flaking paint with a scraper or wire brush, sanding to feather edges, priming any bare spots and repainting.

Chalking

Causes:

Use of a low-grade, highly pigmented paint.
Use of an interior paint for an outdoor application.

Solution:

First, remove as much of the chalk residue as possible, using a stiff bristle brush (or wire brush on masonry) and completely dust off and clean surface using dampened cloth.